Improvement in base-burning stoves



W. DOY LE.

-Burning Stoves.

Base

Patented August li2 INVENTOR'.

AM PHOTUZ lTliDG/MPHIC CC. )V. )4 OSBORNE PROCESS" ATENT OFFICE.

WVILLIAM DOYLE, OF ALBANY, NEW YORK.

iMPPiOVEMENT IN BASE-BURNENG STOVES.

Specification forming part of Letters Patent No. IQLVFG, dated August12, 1873; applicatlonfilcd May 28, 1873.

To all whom it may concern:

Be it known that 1, WILLIAM DOYLE, of Albany, in the State of New York,have invented Improvements in Fuellteservoirs for Heating-Stoves, ofwhich the following is a specification One object of my invention is toimprove the construction of the supply-valve used at the bottom or lowerpart of the fuel-reservoir of base-burnin g stoves, for which I havereceived Letters'latent No. 117,996, dated August 15, 1871. Anotherobject is to provide an improved air-duct, for the threefold purpose ofwithdrawing the gases from the reservoir, keeping the revolving valvecomparatively cool, and supplying the fire with oxygen.

Figure 1 is a central vertical section of a stove embodying myinvention. Fig. 2 is a cross horizontal section on dotted line 3 y inFig. 1. Fig. 3 is a vertical section of the revolving valve having flatsides, and suspended within its spherical casing G.

The fuel-reservoir B is constructed in any convenient form, preferablyconical or cylindrical, open at the bottom and top, the bottom beingprovided with a spherical faucet-valve, A, and the top with any ordinarycover.

It will be seen from the drawing that there is no communication betweenthe reservoir B and the combustion-chamber G, except at the bottom ofvalve A, either directly downward at its bottom or through the sides ofthe reservoir into descending flues an. This reservoir is in thisrespect unlike that of other stoves of this class. They are usuallyconstructed with inside covers or valves, which, when open, allow thegas within the reservoir to escape from the top of the reservoir intothe combustion-chamber at its upper part, or, as is frequently the case,into the room whenever the outer cover is removed to supply fuel to thestove.

To the outside of reservoir B I secure tubes or flues a a, closed attheir tops, but communicating with the reservoir by means of one or morerows of perforations, e e, in its sides. The bottoms of fiues a a join'to one or more horizontal cold-air tubes or fiues, c c, which arelocated near the bottom of the body-section I of the stove. The innerends of fines a a connect to a cold-air space or flue, 1), surroundingthe valve A. Valve A is a faucetvalve, and is made spherical in form,consisting of a segment of a hollow sphere included between two parallelplanes, as shown in section in Fig. 1, and may have flatsides, as shownin Fig. 3. The sides of this valve are solid or imperforate, for thepurpose of forming the cold-air space 1). Valve A is supported upon twoopposite axial bearin gs or shafts running into and supported by anouter casing, G, of a spherical form, as shown in Figs. 1 and 3. Saidcase G constitutes the lower or delivery part of fuel-reservoir B, andis made large enough to give a flue-space, b, around the valve A, forthe circulation of cold air around the valve. By making valve A in aspherical form, with solid or imperforate walls, as herein shown, I findthat it is easier of construction and better in operation than when madewith perforated ends or sides, as in my patent hereinbefore referred to;also, that by making a line, b, as herein shown, tosurround the valve A,and connecting said flue b with cold-air flues c 0, the valve will bekept in good working order for a greater length of time. Flues a a maybe made either upon the outside of or within the reservoir B or they maybe made to entirely surround the reservoir, forming one continuous fluebutIdo not think it desirable to do so.

The operation of my invention is as follows: The fire having beenkindled, and the reservoir B filled with fuel and covered, it will befound that currents of cold air will enter the fines c c, passing intothe flue-space b around the valve A, keeping it cool and in good workingorder thence the air will pass down to the bottom of the valve into thefire. The arrows d d indicate the entering cold air, and the arrows f fthe course of the gases in passing from the reservoir into thedescending flues a a. Simultaneously with the above operation a downwarddraft will be caused within the flues or chambers a a, which will carryoff from the reservoir all accumulation of gases which rise in thereservoir, and which is very objectionable in parlors or other rooms.The cold air entering flues 0 c, after passing around and cooling thevalve A, will go into the combustion-chamber G within the mica section1), there to supply the fire with oxygen for the more perfect combustionof the fuel.

It will be seen that the perforations e e extend from the top of thereservoir B down to the top of the valve A. By this arrangement thefuel, as it descends in the reservoir, uncovers a greater number ofescape-passages for the gas, which increases as the fuel descends.

WhatI claim as new, and desire to secure by Letters Patent, is

